Finally, the methods proposed in this paper are generally inspired by non-linear programming [1]}, and the Fibonacci search algorithm in particular [2]}. Apart from Fibonacci line search, there are several other optimization methods, such as, bisection, Newton’s method, or gradient decent [1]}, which are related to the tackled problem. However, these methods require derivatives, which cannot be computed for the analyzed, discrete, function of classifier evaluations, and, therefore, they will not be discussed in this paper.
